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9. Troubleshooting
Symptoms
The instrument is making an unusual,
rapid clicking noise when it is turned on.
The touch screen does not light up when
the instrument is turned on.
Wrong language displayed.
Touch Screen is out of calibration.
Slight variations in run time observed.
Promega Corporation
2800 Woods Hollow Road • Madison, WI 53711-5399 USA
Toll Free in USA 800-356-9526 • Phone 608-274-4330
Maxwell
®
16 MDx Instrument Technical Manual
Causes and Comments
•
Verify that the Magnetic Rod Assembly/Plunger Bar shipping
anchors and Platform shipping anchors have been removed.
•
Sensors may need to be cleaned. Contact Promega or your local
Promega representative for assistance with sensor cleaning.
•
Look for obstructions that may be preventing a head from moving
through its full range of motion (for example, plungers in the tracks
of the deck).
If you cannot hear the motors running:
•
Check that the unit is plugged into a working electrical outlet .
•
Verify that the plug is securely connected to the back of the
instrument.
•
A 3-amp time-lag fuse protects the instrument electronics and is
located next to the power switch. If the fuse is blown, identify and
correct the cause. Never replace this fuse with a fuse rated for
higher than 3A.
•
Contact Promega or your local Promega representative for service.
If you can hear the motors running:
•
Either a cable has become disconnected from the LCD screen, or
the LCD screen is broken or damaged. Contact Promega or your
local Promega representative for service.
If the wrong language is displayed, the Select Language Setup screen
can be accessed by switching the instrument off and on. In the Home
screen, press the up arrow four times on the instrument keypad. This
will open the Select Language screen, and the desired language can
be selected.
If the touch screen is out of calibration and the display is not centered
correctly, you can correct it by turning the instrument off and on. When
the Home screen is displayed, press the back arrow on the instrument
keypad four times. This will take you directly to the touch screen setup
screen, where you can recalibrate. If you still experience problems
after recalibration, contact Promega or your local Promega
representative for service
The instrument checks the temperature within the elution slots. If the
temperature is not high enough, the instrument waits for the correct
temperature before continuing the run. This means that there may be
slight variations in run time between runs.
part# TM320
21
rev. 9/09
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